The two sides also reached an understanding on some other security related measures. These included: a new bilateral Maritime Security Dialogue; enhanced military engagements and exercises at a more advanced level; naval discussions on submarine safety and anti-submarine warfare; the exchange of information on commercial shipping traffic; and two pathfinder projects. Taking note of these positive developments, Carter stated that the Indo-US relationship is destined to be one of the 'defining' partnership of the 21st Century.

What gives credence to such understandings and statements is the convergence of US and Indian interests in the evolving geo-strategic paradigm of the Indo-Pacific region. Specifically, this is the result of China's claims over the South China Sea, its declaration of an Air Defense Identification Zone in the East China Sea, and its demonstrations of its air and naval muscle intended to restrict freedom of navigation and degrade the rules based order.

Against these developments, Carter's visit to India was aimed as a signal to China that, in addition to alliance agreements with Japan, South Korea, Australia and Singapore, India — the dominant power in the Indian Ocean (with control over choke points like the Malacca Strait) — is also on the side of the US.

In India, these action collectively bring to mind Mao's declaration back in 1962, that he would 'teach India a lesson'.

Other recent developments that have raised serious concerns in India include China's emphasis on 'far seas' in its latest Military Strategy, which includes the Indian Ocean, projects like 'one belt one road' and the construction of Gwadar Port in Pakistan. Thus, by signing the Logistics Exchange Agreement with the US, India signalled that it has both an option to partner with the US, and that China's hegemonic postures could facilitate its movement more fully into the US camp.

However, India, notwithstanding its growing relationship with the US, has also also taken notice of the ongoing strategic partnership between the US and Pakistan. Recently, in the face of Indian opposition, the US approved the sale of eight F-16 fighter jets to Pakistan, a transaction intended to enhance Pakistan's counter-terrorism capability. By Indian calculations, however, this sizeable force of fighter jets appeared disproportionate for the fight against terrorism. Also, with the US decision to withdraw its forces from Afghanistan, India was left to defend itself.

India also considers a confrontational posture towards China would have long term repercussions. While the US, with its global security priorities, may shift its orientations elsewhere, India shares around 6000km of borders with China and Pakistan, and could be pushed into a long-term rivalry. India, at this stage, cannot afford a two-front conflict. Moreover, India's increasing trade links with China, its lack of a direct interest in the South China Sea dispute, and its own dominance in the Indian Ocean keep it somewhat comfortable with Beijing.

To respond to the challenges posed by China, there is no doubt India has shifted its traditional approach of 'dissuasion' to one of 'credible deterrence', considering its strategic thinking, New Delhi is likely to stick with its policy of of deterrence rather than containment regarding China, and is unlikely to enter into an alliance with the US.

Given these considerations, what additional significance does Carter's visit hold? It appears the US has adopted a new approach in engaging with India. Two visits to India by President Obama and a second visit by Secretary of Defense Carter within a year indicate the importance the US attaches to the relationship. Moreover, the Obama Administration has emboldened Prime Minster Narender Modi's 'Make in India' campaign. Carter categorically stated that under the US-India Technology Initiative, the US has delivered 'unique technologies' to India and there is no 'agreement like that with other countries'.

Further expanding collaboration under the Defence Technology and Trade Initiative, US defence companies Boeing and Lockheed Martin have expressed interest in manufacturing F/A-18s and F-16s in India. Also discussed have been collaboration on digital helmet mounted displays for fighter jets (to aid Indian counter-terrorism efforts), and a joint biological tactical detection system to support India's requirements. Addressing India's other concerns, Carter concurred with New Delhi that Pakistan acts as a source of terrorism and the US, as well as India, has suffered from terrorism 'emanating from Pakistan'.

Against this backdrop, India's agreement in principle to the Logistics Exchange Agreement is a step forward from the previous Indian government that, under the camouflage of strategic autonomy, evaded signing 'foundational agreements'. As India is not an alliance partner like Japan and Australia, it does not allow US troops to be stationed on its soil. While India and the US have converging strategic interests, India has retained its autonomy. Therefore, India's evolving strategic partnership with the US appears not only aimed at China, but also affords India some leverage in its negotiations with Beijing.

In sum, Carter's visit appears to be a win-win outcome, India and the US agree on safeguarding freedom of navigation and flights, a rules-based order, and upholding regional security and prosperity in the Indo-Pacific region. However, India's clear intention to retain its strategic autonomy reflects its apprehension that US strategic interests may shift elsewhere. In what may have been an effort to allay this concern, Carter stated: 'We try to be a trusted partner of India'.